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Leading Axion-Photon Sensitivity with NuSTAR Observations of M82 and M87

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arxiv 2404.14476 v1 pith:BTGVN4T6 submitted 2024-04-22 hep-ph astro-ph.GAastro-ph.HE

Orion Ning , Benjamin R. Safdi This is my paper
classification hep-phastro-ph.GAastro-ph.HE
keywords axionsnustaraxionaxion-photonconversiondatagalaxiesgalaxy
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We perform the most sensitive search to-date for the existence of ultralight axions using data from the NuSTAR telescope. We search for stellar axion production in the M82 starburst galaxy and the M87 central galaxy of the Virgo cluster and then the subsequent conversion into hard X-rays in the surrounding magnetic fields. We sum over the full stellar populations in these galaxies when computing the axion luminosity, and we account for the conversion of axions to photons by using magnetic field profiles in simulated IllustrisTNG analogue galaxies. We show that analyzing NuSTAR data towards these targets between roughly 30 to 70 keV shows no evidence for axions and leads to robust constraints on the axion-photon coupling at the level of $|g_{a\gamma\gamma}| \lesssim 6.4 \times 10^{-13}$ GeV$^{-1}$ for $m_a \lesssim 10^{-10}$ eV at 95% confidence.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Coherent collective response in many-qubit systems for dark matter detection

    hep-ph 2026-06 unverdicted novelty 6.0 of 10

    Ramsey interferometry on large arrays of unentangled qubits achieves dark-matter sensitivity scaling as 1/sqrt(N), enabling projected bounds competitive with or better than existing limits for N greater than or equal ...

  2. Constraints on High-Frequency Gravitational Waves from Graviton-Photon Conversion in the M87 Galaxy

    hep-ph 2026-04 conditional novelty 6.0 of 10

    Graviton–photon conversion in M87's magnetic field sets h_c and Ωgw h² limits 1–5 orders of magnitude tighter than Milky Way-based bounds across 10^10–10^27 Hz.

  3. Axion lines from nuclear de-excitations in galactic stellar populations

    hep-ph 2025-09 conditional novelty 6.0 of 10

    No 14.4 keV axion line from 57Fe de-excitations is seen by NuSTAR toward M87, M82, M31, or the Galactic Center, yielding |g_ann x g_aγγ| < 1.1e-22 GeV^-1 for m_a < 1e-10 eV.

  4. Gamma Rays from ALP-Photon Conversion and Inverse Compton Reprocessing in Neutron Star Magnetospheres

    astro-ph.HE 2026-08 conditional novelty 5.0 of 10

    ALP-to-photon conversion near four pulsars produces mostly sub-MeV emission: Fermi-LAT is insensitive to the channel, COMPTEL data already exclude new parameter space at high ALP mass, and COSI could probe much more.

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